diff --git a/tgstation.dme b/tgstation.dme
index 4fb3920c45..02e69c857a 100644
--- a/tgstation.dme
+++ b/tgstation.dme
@@ -400,6 +400,7 @@
 #include "code\controllers\subsystem\radio.dm"
 #include "code\controllers\subsystem\research.dm"
 #include "code\controllers\subsystem\runechat.dm"
+#include "code\controllers\subsystem\security_level.dm"
 #include "code\controllers\subsystem\server_maint.dm"
 #include "code\controllers\subsystem\shuttle.dm"
 #include "code\controllers\subsystem\sound_loops.dm"